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Do you scope NFRs in the beginning or end of your product/solution ?

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NFR_1

There are multiple questions that come up when we think about the NFRs in our product or solution. The normal practice is these days accept they will show their head in the product eventually but feign ignorance at the beginning of the product / solution as you are busy doing other things , like getting the product up and running. Most often you know very little about these in full detail at the start of the project or work. You may know that there are some implicit NFRs like the user should not experience unacceptable delays or his/her UI experience should be good. These are like eating food at a particular restaurant and having to comment on it. Many people have many views.What would be the common denominator here ?

When you scope the design of your product / solution it is quite accepted that these creatures are usually hard to deal with are there but you know they will not pose a danger immediately and you can be friends with them at least. So what is the accepted way to design NFRs or look at them at the beginning of the start of work.

While you prepare your enterprise or business requirements take a note of the fact of what the product is all about. You cannot get all of them right here , accept it. As the product is itself evolving there is very little knowledge of the system in the beginning. You have a product in mind but as you see the wire frames, screens, prototypes and the product itself in some form on the road you will be able to get to know where to head with your NFRs. Most often this is true that you do not even know the exact number of users who are going to use your system directly or indirectly. So the sane way forward would be to crystallize your enterprise/strategic and business requirements and use your judgement to see where these will impact your solution/product and allow scope for these in some little way at the start and keep evolving from there on.

Things to do to scope your NFRs in the beginning of the project or work :

1. Understand  your product / context / solution in good details and who your end audience is going to be. What mediums/channels will they be using your product / solution. Leave no stone un-turned here such as what channels , devices they will be using including handhelds/phones/laptops/smart phones and what exact versions will be used here. Do check the list of user bases in these categories and arrive at what will be done to scope the needs of these people who will be using your system.

2. Have a NFR checklist / template and be aware to use them on how they might impact your solution. These are either organization repository artifacts or industry specific ones available / published as a part of known things to be taken care of. This will help you with at least glancing through some of them even though they do not look obvious at the start of the project. Here is a look at high level list from the ISO 9126 wiki list read more.

3.  These templates are extensive questionnaires dealing with all the types of scenarios that the user can land. Go through them with the performance validation folks or sit through people who have done this and arrive at the complete list specific for your context. Have a list that covers your requirement.

4. Conduct a series of short workshops either one on one or select participants who have knowledge of the business or context and then work towards preparing the list of NFRs the system should be ready for. This will reveal a lot about the system , talk to the end users , people who have been playing around with the system and test people.

5. Throw open your solution to folks internally in the system if there is already some form of solution that you are planning to improve upon. If it is a totally new from the scratch solution there may not be any organization knowledge on how to do things here. Do let the people who have UI experience , the end users give them your inputs or experience here. This is generally the case of a patient who knows more about a particular disease than the doctor on the same subject. Take all these and add your own judgement with due diligence here.

6. Get experts in each area be it security, performance, clustering, load balancing, UI to give them their gyan on how they approach these issues. Get these vetted against what you have scoped already. Have a sign off from all those who can cross check and use this baseline as your initial list.

Scope everything that can go wrong with the system and plan for them. 

As with systems more clarity will emerge as we go around iterations of the product and things get more refined and clear. Also when you design your system always check for the alternate flows on what could go wrong with your system in all the flows. If you are using a messaging system or third party provider for SMS messaging then check what if one message gets lost along the way. This will help plan for some really crucial quality attributes here. As your system evolves your functionality although was the same from day one you will find the same being presented in multiple ways to the end user.

These steps as a starter will help get you out of the alligator pond where your only option would be be friends with these creatures or risk being eaten up.

Why Sign both the Manifestos Agile and Software Craftsmanship ?

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signhereorthere1

This question is more like you what if you were asked to sign for two rival organisations one pitted against the other. In a communist regime it would be akin to siding with the dictator and other with the rebellion groups at the same time. On one hand we had the agile manifesto which brought to the table best practices of XP which later took over to Scrum and now there is movement called Software Craftsmanship which is gaining momentum. It was always there but it just that it is resurfacing itself with more necessity now. Need a Surgeon who follows all the procedures correctly and also does a good job of the surgery. This is how we need to see both these movements Agile and Software Craftsmanship movement.

What is Agile manifesto ?

  • Individuals and interactions over processes and tools
  • Working software over comprehensive documentation
  • Customer collaboration over contract negotiation
  • Responding to change over following a plan

Remember the initial agile thing  that we got to practice was that of Extreme programming and it sounded as if we were doing something out of the way. Not certainly new things but old things in a newer faster effective way. It got people involved in the whole process and brought a lot of mileage and visibility in the organization. A little later came Scrum and other lean and mean characters followed.

While all of these got practiced by people , the craft of delivery good software got lost along and it became more of a process rich methodology with backlogs, sprint run race velocity and a lot of jargon thrown along the way. We left the main essence of all our work which is to write good software aside and got carried away by all things agile. Little realizing that if we sulk on writing good software then it will eventually slow us down no matter agile or otherwise.

Just as we have good engineers doctors who take pride in laying a state of the art bridge or performing complicated surgery , an expert software person these days is almost dealing with the same set of tools and many a times doing mission critical jobs which are at risk if we leave the craft aside and focus on delivery alone.

 What is Software Craftsmanship ?

  • Not only working software,but also well-crafted software
  • Not only responding to change,but also steadily adding value
  • Not only individuals and interactions,but also a community of professionals
  • Not only customer collaboration,but also productive partnerships

Why we need Craftsmanship in good measure along with Agility ?

Technical debt increases in the project as it progress if the initial thought process to create an architecture which forms the bedrock promoting flexible changes end to end is shallow and not done correctly.

Most often we know how quickly we ended up doing a POC or the initial releases of the product. As we progressed things got slow to the point where there were instances where a customer wanted a font change or a logo change on some index.jsp but we ended up saying it is going to take some obscene amount of time citing organisational procedures, bureaucratic red tape , QA , testing of all forms , our platform certification practices etc. This is true of even the big boys when we request a small change in any software of enterprise level, all we get to hear is yes we have considered it but gives us time till next release and we will put it right back in there. All of this is familiar to most of us when things looked quick doable in a jiffy but as the product matures ,egos rise and technical and product debt increases we find ourselves like the rain starved farmer looks at the skies for divine intervention. This could have been avoid if we focused on Software Architecture best practices and craftsmanship of some form. The better the skill less is the debt . We have existence at all levels so we could have various forms of craftsman some more skilled than the others and others not even acknowledging that there needs to be one on the team. If we do not pay heed to software quality and design principles , architecture best practices , code best practices and correct things then and there we will be debt ridden and eventually end up with the debt being written off meaning scrap the product line and look at rewriting this.

There was this joke going around in one of the companies , there are 50 people working on re-factoring the product and the unofficial hear say was you need half the time and only 15 people to rewrite the product completely from scratch. Most often you cannot digest the fact that scraping something altogether is worthwhile , just as we have an old item in our house that served its purpose but now occupies space and does less. Of course while we value that it served us well and enabled us to get this far and when we want to do something different then we should be able to redraw our priorities and align our needs accordingly. Writing good software is an art with more of a process like if we get X people certified on Y technology then we can reap Z benefits over a period of time. This rarely works although most often this gets practiced everywhere. Just as of all the people who learn a language only some manage to write poetry that can move minds and souls. It may not be a good analogy as we have fewer poets than software engineers these days.In a similar fashion while we need agile practices to help us quickly add scale to our operations we also need to have the craftsmanship part of it to go hand in hand. Else we will have a process rich methodology without craftsman who can execute on the promise of the Agile story. We could look at in more detail what constitutes craftsman ship in an other thread.

So sign up for both if you want to sow the seeds as well as reap the rich harvest.

Why are benefits difficult to calculate in software investment ?

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Cost benefit analysis is a good tool to estimate the ROI based on investment in software. It is a simple formula that says

Cost/Benefits Ratio = Benefits of the Solution-Product /   Service Cost of investment.

This simple looking formula enables ones to calculate the cost of investment against the benefits of the investment.

Let’s say we have two competing product line items one of them being revamping our click and install strategy and the other one being upgrading to a new application server. Let’s say the click and install strategy brings to the table the benefits of a literally one click install and there are no ambiguous things in the installation and every thing that the customer/ install engineer needs to do at site or on the target box is well defined and crystal clear. This is an area which involves folks from different modules to collaborate and provide their inputs to the installation team.

Overall what does this involve : Individual teams ( collect all your artifacts and hand them over to the install team) , install team ( collects these artifacts and includes them in their batch installation process/software reorganizing what comes first and second and so on). Now this simply means two teams at work one team is simply a provider of data having very little to do from their side at least at the start of the program to enable the grand vision of a one click install. The other team is busy with the data obtained from teams and busy fine tuning their install elements and getting the software installation in place. Lets say individual teams put together spent 5 developers ( 2 days ) to flesh out the details and around combined effort of 2 man months ( 5-6 developers from each team fixing the the changes for the single click install – this could have further broken down into consultants / developer partners and members of the company – aggregate the numbers here and total them into man months and convert them to a FTE and say you arrive at 2 man months of effort. If we calculate an 8 hour work week then if the charges are around 300$ per day by some outsourcing company and let’s say the cost to company of a in house developer is 100$ ( minus salary / training / benefits etal) . To keep things simple we say 2 man months was the combined time taken across teams to release this feature meaning a shippable product with rounds of QA thrown in adequate measure.

Cost of spend on one click install  =  2 man months * 60 days ( holidays included) * 450 ( Average rate of internal and external teams) = 54,000 $

Lets say check benefits of one click install  :

Banks operational staff is cheerful with rolling releases / bug patches and defect fixes. They talk good about your product with other vendors who are SI at a particular engagement.It takes only one of the usual Joe’s to fix and avoids 4-5 people late at nights on friday weekends. ( This is tangible direct revenue can be associated with this / weekend / late night allowance included in happier times else it is sheer push that works from one and all to get the rollout ).The support team uses less cuss words and your effort begets good karma. Wait and watch. Apple effect to follow.Earlier if the rollout took combined effort from several teams for a stretch of days on end and finally breathe easy now you can probably do it in much less time . Tangible value here as well.

On the other hand let’s say the application server install  let’s say took 2 people from 5 teams to finish the work internally without outsourcing in 3 weeks time and this adds up to 2 (developers)* 650 (per day rate) * 5*15( days) = 97500 $

Cost of spend on application server migration = 97,500 $ + 50,000$ License fee of the product certified.

Now if you have the product rolled out in different markets then cross sell , up sell opportunities can also add up to revenue. Can this could make up for sunk capital on this feature. But again this would be from a pure financial gain point of view.

Benefits of migration to application server migration : 

You are seen as leading technology changes from the front. Customer gets to know from you directly instead of he having to ask you to migrate because the rest of his surround system is already on the new platform and having to pay recurring license on an off the shelf product is becoming expensive and illogical. As you grow bigger your problems are bigger. There was a case in point when someone wanted a feature to be turned OFF in the product, that was in itself a project and not justifiable. Here again technical debt , software craftsmanship and other in the fraternity come in handy if you were pally with them initially.All of this call for a definite method in the madness approach. Do you have teams who look at software delivery like a relay or more like a close knit game were all are involved from start to finish.

Now coming back to the question of tangible benefits it would less memory footprint , better resources and more value for money spent on the hardware boxes. CTO heard less of our investment in X9000 series machines with Y investment still chokes on wednesday at 11.00 am every week. Less memory footprint would indirectly increase CPU responsiveness and provide more head room for multiple applications to work along side without peaking and frozen behaviors.  You can arrive at some benefits here in terms of saving and additional hardware resources or if you are in the cloud already think of less pay as you use cases. Some tangible benefits. Attaching precise X dollars is again a challenge as many factors would be involved. 

Lets say you have brainstormed internally with your teams and arrived at cost benefit analysis for three solutions at a prototype level and are stuck at which one to pick. Then the following calculation would be useful. But there is usually more to it than just the financial aspect to it as we saw above.

costbenefitanalysis

The above is a cost benefits analysis for three competing solutions and solution Y has the maximum benefit to the cost incurred if we were to consider from a pure financial point of view. Most often technology folks are immersed deep down in technology issues and challenges and at times do not see this side of the story. But the decision makers and people who approve the cost of spend on technical projects would need this and additional mechanisms such as PERT ( where probability or chance of success also is a parameter in the calculation ) to arrive at or narrow down the choices before sponsoring the projects. At times we even have rational such as we have some additional folks on bench so lets kick start this project on the side and add value along the turns. In such instances we incur benefits once the software is delivered value realized and when we are able to push the product out there in the market.

There is also the story of twitter , you tube which for the longest time were funded with out any benefits in sight in such cases the above rationale does not hold much weight except of course for making decisions which eventually made up the twitter or you tube. Anyways it is nice to be equipped with this knowledge at some point of time and if you are continuously innovating then obviously the value is hard to calculate and benefits are bound to flow. So know when benefits need to be applied and when innovation culture precedes all then benefits although intangible is an immediate after effect.

Use calculations with the knowledge that you have on systems and then benefits would become easy to comprehend and calculate. So the question remains at large although answered on some fronts.

Use a Balanced Score Card For Your Organization

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Balanced Scorecard is a effective technique to monitor and set strategic goals for Organisation. It has endured twenty years of existence and is an effective tool used in Enterprise Architecture and used widely across enterprises big and small.

Need one for your organisation when you need to revisit goals and set new ones. Track them to closure and make strategy everyone’s business instead of being handed over from the top. Watch this video on how to arrive at a basic BSC for your Organisation.

For more training

www.eturnti.com/training
http://eturnti.com/enterprise-archite…
asketurnti@eturnti.com

What is Enterprise Architecture?

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More people in the line wanting to become architects/managers , join an architectural practice, better your existing knowledge levels and people wanting to climb the architectural / managerial ladder in your organisation can augment your skills and can benefit from this training.

What is EA is it a body of knowledge , bunch of frameworks, tools , practices , methodology , best practices ? Know what it is to know what goes behind EA practices and how they are applied to situations and derive value and showcase improvement in the organisation.